Home / 11,125.28-15,368.67-9,731.07

Finding the Fourth Proportional to 11,125.28, 15,368.67 and 9,731.07

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Solution

The fourth proportional to 11,125.28, 15,368.67 and 9,731.07 is: 13,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.28 : 15,368.67 = 9,731.07 : x
  2. Step 2: Convert to fraction form
    11,125.28/15,368.67 = 9,731.07/x
  3. Step 3: Cross multiply
    11,125.28x = 15,368.67 × 9,731.07
  4. Step 4: Simplify right side
    11,125.28x = 149,553,603.58
  5. Step 5: Solve for x
    x = 149,553,603.58/11,125.28
  6. Step 6: Final answer
    x = 13,442.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.